Thinking Mathematically (6th Edition)

Published by Pearson
ISBN 10: 0321867327
ISBN 13: 978-0-32186-732-2

Chapter 12 - Statistics - 12.2 Measures of Central Tendency - Exercise Set 12.2 - Page 791: 8



Work Step by Step

The mean $\overline{x}$ of a set of data with $n$ values can be found using the formula: $\overline{x} = \dfrac{\sum{x}}{n}$ (sum of all the items divided by the number of values). Solve for the mean using the formula above to obtain: $\overline{x}=\dfrac{1.4+2.1+1.6+3.0+1.4+2.2+1.4+9.0+9.0+1.8}{10} = \dfrac{32.9}{10} =3.29$
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